Please explain the solution to this general accounting problem with accurate principles.

Sunrise Manufacturing forecasts that total overhead for the current year will be $10,500,000, and that total machine hours will be 175,000 hours. Year to date, the actual overhead is $6,500,000, and the actual machine hours are 87,500 hours. If Sunrise Manufacturing uses a predetermined overhead rate based on machine hours for applying overhead, as of this point in time (year to date), the overhead is over/under applied by what amount